Wrench



(No Model.) 7 I D. Pu. P ER.

WR v I No. 325,010. Patented Aug. 25, 1885.

, FIGJ.

" l um" IWIHF llil l lllllllll UNiTE STATES PATENT OFFICE.

DANIEL It. PORTER, OF REVERE, MASSACHUSETTS.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 325,010, dated August 25, 1885.

Application filed April 8, 1885. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL R. PORTER, a citizen of the United States, residing at Revere, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in renches, of which the following is a specification.

The object of my invention is to produce a wrench which can readily be adjusted to pipes or cylindrical rods and bars of different sizes without the necessity of using a screw forthe purpose, and which can be used in confined spaces where wrenches of ordinary construction are not available.

The invention consists of an upper jaw fitted within a frame or shoe so as to admit of its being adjusted lengthwise. On the upper side of the jaw is a series of transverse grooves or notches, in which fits a pin or bar secured in the shoe, the jaw being held against the said pin by means of a spring having one end attached to a cross-piece in the shoe. The forward end of the handle forms the lower jaw, and to which is pivoted the lower end of the shoe. A spring attached to the upper side of the handle serves to throw the upper jaw forward onto the pipe or bar to be turned.

Referring to the accompanying drawings, Figure l is a side elevation of my improved wrench, the dotted lines showing the upper jaw as opened to receive the pipe. Fig. 2 is a plan or top view of the same. Fig. 3 is a longitudinal. vertical section of Fig. 1. Fig. 4 is a front view of the shoe or frame.

A is the handle, which is made tapering toward the outer end, and having the forward end serrated to form the lower jaw, as shown.

C is the upper jaw, having its teeth out as shown. On its upper side is a series of transverse grooves or notches, e e, in which fits a pin or bar,H, secu red in a shoe or frame,B,by means of which the upper jaw is made adjustable for use 011 pipes of different sizes. The jaw O is held against the pin H by .means of a spring, G, secured at one end to across-piece, b, in the shoe B, and having its free end hearing against the under side of the jaw O, as

shown in Fig. 3. At the rear end of the jaw O is a projection, O, which serves asathumbpiece, and by pressing upon which with the thumb the jaw O is opened to receive the pipe or rod to be operated upon.

Bis the frame or shoe, formed with two sides, as indicated in Fig. 4, and secured together by the pins or bars H F and the crosspiece b. It is pivoted at its lower end to the handle or lower jaw, A D, by a pin or l ar,a, as shown in Figs. 1 and 3.

The upper side of the jaw D bears against the pin F of the frame B.

On the upper side of the handle A is secured a spring, E, the free end of which bears against the cross-piece b at the rear of the shoe B for the purpose of holding the upper jaw, O, in place on the pipe while in operation.

To operate the wrench, the jaw G is first adjusted,by means of the pin H in the groove 6, to the size of the pipe to be operated upon. The upper jaw is then opened by pressing upon the thumb-piece O, and the jaws are placed upon the pipe. The handle is then forced downward, and the teeth of the two jaws being so arranged as to grip on both sides, the pipe is easily turned, and by simply drawing the handle upward the lower jaw will slide over the pipe, and when forced down again the jaws will grip and turn the pipe, as before, thus enabling the wrench to be set upon the pipe and then operated by using only one hand.

WVhat I claim as my invention is In a wrench, the combination of the handle A, having a jaw, D, at its front end, the pivoted shoe B, the jaw 0, provided with the grooves e c, and the springs E G, substantially as shown and specified.

In testimony whereofI have signed my name to this specificationin the presence of two subscribing witnesses.

DANIEL R. PORTER.

\Vitnesses:

J. H. ADAMs, E. PLANTA. 

